from PyQt5.QtGui import QPainter, QBrush
from PyQt5.Qt import QApplication
from PyQt5.QtWidgets import QGraphicsScene, QGraphicsView, QGraphicsWidget, QGraphicsLinearLayout
from PyQt5.QtCore import Qt
import sys

from graphic_components import board


class SudokuWindow(QGraphicsView):
    """
    The main window that shows the graphical components.
    Contains the Sudoku Board and the Menu Board.
    """

    def __init__(self):
        super().__init__()

        # Set up the Scene to manage the GraphicItems
        self.scene = QGraphicsScene(0, 0, 500, 600, self)
        self.setScene(self.scene)
        self.setSceneRect(self.scene.sceneRect())

        # Add the Boards to the form with a vertical layout
        self.form = QGraphicsWidget()
        self.layout = QGraphicsLinearLayout(Qt.Vertical)
        self.gameboard = board.GameBoard(400, 400)
        self.menuboard = board.MenuBoard(400, 80)
        self.layout.addItem(self.gameboard)
        self.layout.addItem(self.menuboard)
        self.layout.setSpacing(50)
        self.layout.setContentsMargins(50, 50, 50, 0)
        self.form.setLayout(self.layout)
        self.scene.addItem(self.form)

        # Setting the view
        self.setBackgroundBrush(QBrush(Qt.black))
        self.setRenderHint(QPainter.Antialiasing)
        self.fitInView(self.scene.sceneRect(), Qt.KeepAspectRatio)
        self.show()

        # Cross-Board signal connections
        self.gameboard.gridDrawn.connect(lambda: self.menuboard.show_children(True))
        self.gameboard.newGameSelected.connect(self.menuboard.set_difficulty_text)
        self.gameboard.sudokuDone.connect(self.menuboard.finish_the_game)
        self.menuboard.diff_display.notFocus.connect(self.gameboard.game_refocus)
        self.menuboard.diff_display.difficultySelected.connect(self.gameboard.new_game)

    def resizeEvent(self, event):
        self.fitInView(self.scene.sceneRect(), Qt.KeepAspectRatio)
        super().resizeEvent(event)


if __name__ == "__main__":
    app = 0
    app = QApplication(sys.argv)

    ex = SudokuWindow()
    sys.exit(app.exec_())